Why Don’t We Do It In The Yard?

In his landmark book, The Evolution of Human Sexuality, anthropologist Donald Symons suggests that since men can never get enough of it, sex is a precious commodity and therefore best enjoyed covertly to avoid inciting covetousness. "This is for the same reason that during a famine anyone with food is likely to consume it in private," says Steven Pinker of Harvard University. "A sexual act, even among consenting adults, has a high probability of upsetting someone," he adds. Parents or community members may disapprove and for children it can lead to the creation of rival siblings.